This article’s premise is only half-true. The Soviet Union supported Shia Islamists (Iran) against the US and its allies. The US supported Sunni Islamists (Afghan Mujahadeen and their Proto-Al Quaeda Saudi patrons) against the Soviets and their allies.
We supported Israel. Plain and simple. Even as UK/Europe had abandoned it.
That is America’s main legacy in the region and its what grounds us moving forward.